搜索结果: 1-14 共查到“知识库 农学 operation”相关记录14条 . 查询时间(0.025 秒)
Monitoring of operation loading of three-point linkage during ploughing
tractor plough soil properties
2016/4/5
The research was focused on operational measurements of tractor plough tools and their subsequent utilisation and
simulation under laboratory conditions by a hydrostatic simulator. In this field, th...
The Outcomes of Selection in a Closed Herd on a Farm in Operation
Closed Herd Selection Inbreeding Genetic Progress
2016/5/18
A herd of Berkshire pigs was established in 2003 and subjected to selection without introduction of any genetic resources until 2007. The complete pedigree, including 410 boars and 916 sows, as well a...
Operation times in John Deere 1110 E forwarders in regeneration felling
forwarder work efficiency forwarding distance
2015/5/5
We calculated high-power forwarder productivity in regeneration felling with the objective to
set long-term work plans.
Research on reliability of forest harvester operation used in the company Lesy Slovenskej Republiky
reliability forest machines maintenance harvester
2015/4/24
The paper deals with reliability of forest harvesters. They are quite modern and helpful in the process of tree felling. The quality of felling is important for the further quality of wood used in woo...
Evaluation of John Deere 1490D operation phase in typical conditions of the Czech Republic
productivity costs energy audit emissions slash bundle
2015/3/27
The life cycle operation phase of John Deere 1490D energy wood harvester from the aspect of energy audit and environmentally negative influence caused by emissions were evaluated. Energy audit quantif...
Ground based operation effects on soil disturbance by steel tracked skidder in a steep slope of forest
crawler tractor forest floor removal ground based skidding hardwood forest of Iran soil compaction
2015/3/19
In this study, the effects of slope and traffic intensity on soil compaction, rutting and forest floor removal was evaluated on a skid trail in the natural forest of north of Iran. Combination of two ...
Optimazing operation and maintenance Telang II tidal reclamation scheme in relation to agricultural development
Optimalization Water Management Tidal Lowland Reclamation Scheme
2013/2/28
The objective of this research is to study the hydraulic performance of the water management system of the Telang 2 tidal lowland reclamation scheme with respect to the operation and maintenance of th...
Present Situation of Tractor Implement Row-following Operation in Large-scale Upland Farming
crop management tractor implements row spacing
2010/12/2
This study was to examine farmer's working conditions and the accuracy of tractor implements in following rows in a field, and to consider the most appropriate control speed of such implements as prel...
Operation for Improvement Cutting of Coppice and Stability of Snow Cover in Heavy Snow Mountain Slopes
coppice glide of snow cover heavy snow region improvement of stand
2009/8/27
The improvement cutting of coppice was carried out in heavy snow mountain slopes, together with planting and construction of a simple supporting structure for glide of snow cover. To clarify the effec...
Multi Scenario Pellet Fuel Manufacturing Operation Utilizing Cotton Waste
Multi Scenario Pellet Fuel Cotton Waste
2009/4/30
Prior work demonstrated the economic feasibility of gin waste-based pellet fuel manufacturing. The goal of this project was to expand the economic analysis model to include a multi-scenario manufactur...
Operation Research Methods in The Forest Management Planning
Operation Research Methods Forest Management Planning
2009/1/23
The purpose of this study is to approximate the actual forest state to an aptimal forest state within different conversion period lenghts, to ensure the sustainability of allowable cut over planning h...
Effects of tillage operation on soil properties from Pakdasht, Iran
bevameter pressure-sinkage relationship sinkage plates soil properties
2008/11/26
Soil mechanics has of late, taken on a new significance as a field worthy of expended research and application. The basic problem encountered in this field is the determi- nation of certain basic par...
Ergonomic Study on the Process of Mastering Reversible Plow Operation using Ride-on Tractor
ride-on tractor reversible plow physiological strain
2010/12/2
This research was mainly conducted to obtain basic ergonomic data about tractor operator performance and to analyze the mastering process of tractor operation, especially reversible moldboard-plowing ...
SEMICONTINUOUS CULTURE SYSTEM FOR LEMNA GIBBA BIOASSAY: FUNCTIONING AND THEORY OF OPERATION
Lemna gibba steady state semicontinuous culture batch culture nutrient media
2010/3/23
To overcome the problems associated with high concentrations of nutrient and test chemicals
in laboratory Lemna gibba bioassays, a semi-continuous culture system was adopted, and specific equipment w...